Device drawings and connectors
38/75
5.9.2
netHOST for RTE systems
Galvanic isolation of the netHOST devices
NHST-T100-EN
,
NHST-T100-
EN/PNM
,
NHST-T100-EN/ECM
and
NHST-T100-EN/EIM
.
Figure 5: Galvanic isolation of netHOST for RTE systems
The device has three galvanically isolated areas. The isolation to the
network connections is indicated by the red arrow
(A)
.
(1)
System area, galvanically coupled with the power supply connection at X1.
(2)
LAN connection area, 2 * RJ45.
(The figure above shows only one RJ45 socket. The second RJ45 socket is built up
identically and connected to the logic at netX X2.)
(3)
LAN connection area 1 * RJ45
The following table shows the characteristics of the galvanic isolation of the
different areas and coupling against potential equalization:
Area
Connection
Interface
galv.
Isolation
Coupling
Coupling against PE
potential
Functional earthing to PE
(1)
X1
-
no
Cx1
(1)
4 * 10 nF 500V
HF
(1)
Cf = 10 nF, Lf = 47 μH
(2)
X2
Real-Time
Ethernet
inductive
Cx2
(2)
4 * 75 Ω, 1 nF 2000 V
Directly via the metal
connection of RJ 45 sockets
(3)
X3
Ethernet
inductive
Cx3
(3)
4 * 75 Ω, 1 nF 2000 V
Directly via the metal
connection of RJ 45 socket
Table 30: Coupling of netHOST for RTE systems
netHOST NHST-T100 | LAN controlled master devices
DOC130401UM05EN | Revision 5 | English | 2018-05 | Released | Public
© Hilscher 2013 – 2018
